Items on a flatbed:

Question

Cargo on a flatbed trailer or a trailer without sides must be secured to keep it from shifting or falling off during a trip. You should be aware of tie-down requirements for your particular cargo.

Accepted Answer

Must be secured.

Answer

Usually weigh enough that they do not need to be strapped down.

Answer

Do not need to be tied down if the driver is traveling fewer than 100 miles.

Answer

Must be wrapped in plastic.